AI SaaS Starter

Streaming chat, history, credits, and Stripe billing. A Next.js AI SaaS boilerplate you edit.

€99 one-time

Full source code
Commercial use
Instant download after payment
No subscription

Which SaaS kit fits

Three Next.js starting points. The difference is how much of the application is already wired.

SaaS

Next.js SaaS Boilerplate

Best forA smaller SaaS you can understand in an afternoon

Authentication: Email and password
Stripe: Checkout
Database: SQLite by default, Postgres-ready
Dashboard: Included
Emails: Not included
AI streaming: Not included
Usage limits: Not included

€59 one-time

Get the source

SaaS

Complete SaaS Starter Kit

Best forAccounts, billing, email, and deploy config on day one

Authentication: Email and password
Stripe: Checkout, customer portal, and webhooks
Database: PostgreSQL
Dashboard: Included
Emails: Transactional email adapter
AI streaming: Not included
Usage limits: Not included

€79 one-time

Get the source

AI SaaS Starter

Best forAn AI product that needs usage limits and billing first

Authentication: Email and password
Stripe: Checkout and webhooks
Database: SQLite by default, Postgres-ready
Dashboard: Included
Emails: Not included
AI streaming: Streaming chat
Usage limits: Monthly credits

€99 one-time

Get the source

Screenshots

What’s included

Chat interface with streaming responses
Provider adapter for OpenAI-compatible APIs
Generation history
Usage tracking and monthly credits
Free and Pro plans
Stripe billing
Authentication, dashboard, and settings
Responsive layout and production structure

Overview

A chat product with streaming, history, credits, and billing. The model provider sits behind a small adapter. Built for Developers launching an AI tool who need usage limits and payments before the first customer.

Source you edit, not a hosted template

This is a Next.js AI SaaS boilerplate: the chat screen, streaming, generation history, monthly credits, and Stripe are in the project. It is not a hosted AI SaaS template or a prompt pack.

Tech stack

Next.jsTypeScriptTailwind CSSPrismaStripe

Project structure

This is the zip you download. Dependencies are not included; you run install locally.

src/app/app/
src/lib/ai/provider.ts
src/app/api/generate/
prisma/schema.prisma
README.md
.env.example

Setup

1. npm install 2. Copy .env.example and set DATABASE_URL, AUTH_SECRET, STRIPE keys, and AI_API_KEY 3. npx prisma db push && npm run dev 4. Send a message on /app to confirm streaming

The zip includes the project source, README, and .env.example. After a successful payment the download starts on the thanks page.

License

One-time purchase. No Designyff subscription. After Stripe confirms payment, you download the source. Use and modify it in personal, commercial, and client projects. Do not resell the original source as a competing kit. Attribution is optional. You keep the version you bought; later catalog updates are not a subscription entitlement.

Guides

FAQ

Am I locked to one AI vendor?

No. Requests go through src/lib/ai/provider.ts. Point AI_BASE_URL at any OpenAI-compatible endpoint, or replace the adapter.

How do credits work?

Each generation records token usage. Free accounts stop at the monthly credit cap. Pro raises the cap after Stripe marks the subscription active.

Is this an AI SaaS template?

You download a Next.js project and edit it. The chat UI, streaming, history, credits, and Stripe billing are source code, not a hosted builder.